CN101249017A - Device for stabilizing vertebrae and rod connector used therefor - Google Patents

Device for stabilizing vertebrae and rod connector used therefor Download PDF

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Publication number
CN101249017A
CN101249017A CNA2008100096456A CN200810009645A CN101249017A CN 101249017 A CN101249017 A CN 101249017A CN A2008100096456 A CNA2008100096456 A CN A2008100096456A CN 200810009645 A CN200810009645 A CN 200810009645A CN 101249017 A CN101249017 A CN 101249017A
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CN
China
Prior art keywords
bar
stabilising arrangement
rod
receptacle
rod connector
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Granted
Application number
CNA2008100096456A
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Chinese (zh)
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CN101249017B (en
Inventor
L·比德曼
W·马蒂斯
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Biedermann Technologies GmbH and Co KG
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Biedermann Motech GmbH and Co KG
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Publication of CN101249017A publication Critical patent/CN101249017A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7049—Connectors, not bearing on the vertebrae, for linking longitudinal elements together
    • A61B17/705—Connectors, not bearing on the vertebrae, for linking longitudinal elements together for linking adjacent ends of longitudinal elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
    • A61B17/7031—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other made wholly or partly of flexible material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
    • A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Neurology (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

A stabilization device for stabilizing bones of a vertebra is provided, the stabilization device comprising a first rod (1), a second rod (2), a rod connector (3) connecting the first rod and the second rod, the rod connector comprising a receiving portion (4) for receiving the first rod and a fixation element (7) for fixing the first rod in the receiving portion, wherein in the receiving portion a rod contacting surface is provided and wherein the contour of this rod contacting surface has deviations (8;9) from the contour of the surface of the first rod. The rod connector allows to connect a flexible rod, for example made of an elastomer material, with a rigid rod, made for example of a metal.

Description

Be used for the stabilising arrangement of stabilization of vertebral and be used for the rod connector of this stabilising arrangement
Technical field
The present invention relates to a kind of stabilising arrangement that is used for stabilization of bony, described stabilising arrangement comprises first bar, second bar and connects first bar and the rod connector of second bar.Described rod connector is suitable for connecting dissimilar bars, especially elastic rod and rigid rod.
Background technology
The known multiple device that rigidly fixes that is used for the part spinal column.Usually, these devices comprise the rigidity spinal stabilization rod.Dissimilar rigid rods may must be connected.For example, WO2005/099603A1 discloses a kind of rods adapter that is used to connect rigid rod.
Use for some, wish to have a kind of dynamic stability of spinal movement that allow to be connected to specific degrees.Equally, being combined in of the rigidity of spinal column and dynamic stability may be suitable in the specific clinical setting.US 2007/0005063A3 has described the many height that are used for spinal column segment, the system and method for multiple function stable, and it uses motion maintaining part that allows at least a portion vertebral levels (vertebrallevel) motion and the motion blocking portion that stops at least a portion adjacent vertebrae high degree of motion basically.
Therefore, need to use the rigid rod and the flexibility bar of combination, need to be used to the various clinical situation of rigidity and/or dynamic stability.
Summary of the invention
The purpose of this invention is to provide a kind of wide application and simply constructed stabilising arrangement.In addition, will provide a kind of rod connector, this rod connector is applicable to and connects dissimilar bar, especially flexibility bar and rigid rod.
Described purpose is by realizing according to the stabilising arrangement of claim 1 with according to the rod connector of claim 16.Further development is provided by dependent claims.
For example can use according to stabilising arrangement of the present invention in the end of the system that rigidly fixes that is used for fixing the part spinal column.In this case, described stabilising arrangement is as protecting component, in order to protect not over loading of adjacent motor segment.
In addition, it can be used to have dynamically stablizing with the segmentation that rigidly fixes part with alternating sequence.
Described rod connector also can only be used to connect rigid rod.So its wide application.
In a particular embodiment, described rod connector can connect bone anchoring device.
Described rod connector is suitable for using with the flexibility bar of preferably being made by tartan and with rigid rod.When fastening locking member during with fixing flexibility bar, the distortion of elastomeric material cause between flexibility bar, rod connector and the locking member indirectly or dynamic shape be connected (dynamic form-fit connection), and can not damage the overall structure of bar.
And the fixedly use few parts of bar realizes.Therefore, make perioperative operation easier.
Description of drawings
By the detailed description of reference below in conjunction with the embodiment of accompanying drawing, further feature and advantage of the present invention will become apparent and be understood best.
Fig. 1 shows the perspective view according to the stabilising arrangement of first embodiment.
Fig. 2 shows the exploded view according to the stabilising arrangement of Fig. 1.
Fig. 3 shows the perspective view of the locking member of Fig. 2.
Fig. 4 shows the amplification view of stabilising arrangement.
Fig. 5 shows the perspective view of second embodiment of the stabilising arrangement that is in the state that assembles.
Fig. 6 shows the cutaway view of the stabilising arrangement of Fig. 5.
Fig. 7 shows the perspective view of the 3rd embodiment of stabilising arrangement.
Fig. 8 shows the decomposition diagram of the stabilising arrangement of Fig. 7.
Fig. 9 shows the cutaway view of the stabilising arrangement of Fig. 7.
Figure 10 shows the top view of rod connector of the stabilising arrangement of Fig. 7.
Figure 11 shows the perspective view of seeing from according to the top of the rod connector of the stabilising arrangement of Fig. 7.
Figure 12 shows the perspective view of the 4th embodiment of the stabilising arrangement that is in the state that assembles.
Figure 13 shows the exploded view of the stabilising arrangement of Figure 12.
Figure 14 shows the cutaway view of the stabilising arrangement of Figure 12.
Figure 15 shows the perspective view of the 5th embodiment of the stabilising arrangement that is in the state that assembles.
Figure 16 shows the exploded view of the stabilising arrangement of Figure 15.
Figure 17 shows the cutaway view of the stabilising arrangement of Figure 15.
Figure 18 a to c shows the indicative icon of the application of stabilising arrangement.
The specific embodiment
First embodiment referring to figs. 1 to 4 pairs of stabilising arrangements is described.Described stabilising arrangement comprises first bar 1, second bar 2 and rod connector 3.In the embodiment shown, to have diameter be d to first bar 1 1Circular cross section.It is made by elastic biocompatible material, preferably is made of plastics.For example, described bar can be made by tartan, especially based on the material of polycarbonate polyurethane, polycarbonate polyurethane (PCU) or EU (PEU).First bar presents strain under the effect of applied load.The surface of first bar is preferably smooth surface.
In the embodiment shown, to have diameter be d to second bar 2 2Circular cross section, diameter d 2Diameter d than first bar 1Little.Second bar 2 can be made by rigid material, is for example made by biocompatible metal or metal alloy, is perhaps made by biocompatible plastic.But the invention is not restricted to described embodiment, promptly first bar 1 and second bar 2 are made by elasticity and non-elastic material respectively, and/or bar has different diameters.First bar also can be made by rigid material.The cross section of bar can have Any shape.The diameter of bar can be similar and different.In addition, the term bar is interpreted as being suitable for the elongated elements across the distance between at least two vertebras or at least two fractures or the injured osseous part.
In the embodiment shown, rod connector 3 is made by integral piece (single piece).It comprises first connecting portion 4 and second connecting portion 5 that is used to be connected second bar 2 that is used to connect first bar 1.First connecting portion 4 comprises opposing sidewalls 4a, 4b, connects sidewall 4d and the diapire that is connected sidewall of opposing sidewalls 4a, 4b.The inner surface of diapire is formed for the seat 4c of first bar 1.The receptacle that is formed by wall has the cross section that roughly becomes U-shaped, thereby is formed for admitting the passage of first bar 1.Free end at opposing sidewalls 4a, 4b is provided with the female thread 6 that is used to admit locking member 7.Locking member 7 can be the inner bolt that cooperates with female thread 6.Sidewall 4d is formed on abutment surface or the backstop that is used for first bar 1 when first bar 1 inserts first connecting portion.
Especially as appreciable in Fig. 2 to 4, a plurality of ribs 8 are provided with on the surface of present 4c.Rib 8 with the vertical direction of passage axis on extend, promptly when bar 1 inserts and the longitudinal axes L of first bar 1Extend on the vertical direction.In the embodiment shown, the cross section of projection 8 is the triangle of band dome substantially.The length that projection 8 has makes them extend basically and crosses described seat.Each or several rib 8 can stretch out in one or both sides in the groove as groove, thereby present surface provides depression (not shown).Seat 4c forms the bar contact surface.Described projection forms the portion that departs from (deviations) on the surface of departing from bar 1 on the bar contact surface.
Inner bolt 7 has annular projection 9 on its bar contact surface 7a.Annular projection 9 forms the circumferential rib with center cavity.The cross section of annular projection 9 is similar to the cross section of the rib 8 of seat.The diameter of annular projection equals the distance that seat is gone up two ribs 8 that form in this embodiment.Therefore, when bar 1 inserted first connecting portion and is screwed into inner bolt, the part of the contact lever of rib 8 and annular projection 9 was positioned on the opposite side of bar.More particularly, the part of the contact lever of rib 8 and annular projection 9 surface engagement of the relative position on diameter and bar respectively.
In the embodiment shown, second connecting portion 5 forms the cylindrical projections with sidewall 4d adjacency.But the profile of second connecting portion can have any other shape.
Second connecting portion 5 comprises hole 10, and the diameter in hole 10 is enough to admit second bar 2.Hole 10 can be threaded, and second bar 2 can have thread head 2a, and thread head 2a is threaded to provide between second connecting portion 5 and second bar 2 with the screw-internal thread fit in hole 10.
During use, first bar 1 is connected with rod connector 3 with random order with second bar 2.For example, at first, can be by end 2a being screwed into hole 10 and the rod connector and second bar 2 being linked together.Then, first bar 1 is inserted the receiver section of first connecting portion 4, up to it place a 4c to go up and its front near rear wall 4d.Then, inner bolt 7 is inserted and tightens, contact with the surface of bar up to annular projection 9.As shown in Figure 4, the part of annular projection is pressed in downwards on the bar surface.Equally, rib 8 is pressed on the bar surface from the below.Projection is not damaged the integrity on bar surface.Bar begins to deform under the effect of being exerted pressure.This distortion of materials produces indirect form fit and connects.Directly the combination of frictional force and indirect form fit power just with the bar maintenance in position.When first bar 1 and second bar 2 were all made by rigid material, bar was fixed by frictional force.
The free end of first bar and second bar can be connected so that stabilising arrangement is anchored in the bone with other adapter or bone anchoring device.
In a distortion, the diameter of annular projection 9 can be bigger or little than the distance between the outmost rib 8.As shown in embodiment, be provided with two ribs 8.But, also a plurality of ribs can be set.Equally, can a plurality of projections be set at the downside 7a of inner bolt.In addition, the combination of projection and cavity can be set on the surface of the downside of locking member and seat, described seat will allow material deformation to enter in (flow into) described cavity.
In another distortion, the connection between second bar 2 and second connecting portion forms by the interference fit ways of connecting.
Fig. 5 and 6 shows second embodiment of stabilising arrangement.Represent with identical Reference numeral with parts identical among first embodiment, and will no longer repeat its description.The difference of second embodiment and first embodiment is the design of rod connector 31.Rod connector 31 has first connecting portion 4 identical with first embodiment.Second connecting portion 51 comprises hole 11, and the diameter in hole 11 is than the diameter d of second bar 2 2Bigger, so as second bar 2 can entrance hole 11 in.Screwed hole 12 and hole 11 vertical settings.Inner bolt 13 can be screwed in the hole 12, thereby by the mode that clamps bar 2 is fixed in the hole 11.Extend abreast with female thread 6 in hole 12.But hole 12 can be directed by any way, for example centers on be oriented 90 ° of the longitudinal axis of two bars with respect to female thread 6.
The 3rd embodiment with reference to 7 to 11 pairs of stabilising arrangements of figure is described.The parts identical with first embodiment are represented with identical Reference numeral, and will no longer be repeated its description.The difference of the 3rd embodiment and first embodiment is the design of rod connector.Rod connector 301 comprises first connecting portion identical with first embodiment, but second connecting portion is different with first embodiment.Second connecting portion 501 comprises basic in the groove 502 of U-shaped, and the width of groove 502 is than the diameter d of second bar 2 2Bigger, so that second bar 2 can import in the groove 502.The U-shaped groove forms two open supporting legs, and described supporting leg has female thread 503 and is used to admit locking member 504.The downside of the bottom of the U-shaped groove 502 of admittance bar 2 and the locking member 504 that contacts with bar 2 is slick.Therefore, if the rigid material that bar 2 does not deform when applying applied load is made, bar 2 just keeps in position by frictional force.Sidewall 4d is formed for the abutment surface of bar 2 and bar 1.
Figure 12 to 14 shows the 4th embodiment of stabilising arrangement.Represent with identical Reference numeral with parts identical in the previous embodiment, and will no longer be repeated in this description it.
The difference of the 4th embodiment and previous embodiment is the design of rod connector, and described rod connector allows and bone anchoring device, and for example bone screw 20 realizes that multiaxis connects.Rod connector 310 as shown in Figure 12 to 14 comprises first connecting portion 40 and second connecting portion 5 that is used to connect first bar 1, and described in this embodiment second connecting portion 5 is identical with the connecting portion 5 shown in Fig. 5 and 6.First connecting portion 40 comprises the hole 41 that is positioned at a center.The shape in hole 41 is preferably circle, and the diameter in hole 41 is littler than the diameter of the spherical segment head 21 of bone screw 20.The edge in hole 41 can globulate, taper shape or other shape, so that bone screw 20 remains in first connecting portion pivotly.
Pressure elements 43 is set, and it is cylindrical so that can import in the receiver section of first connecting portion 40 substantially.Pressure elements has the ball recess 44 that surrounds head 21 to small part in its side towards head 21.In addition, pressure elements 43 comprises substantially and is the groove 45 of U-shaped that groove 45 is formed for admitting the passage of bar 1.Bottom 47 at U-shaped groove 45 is provided with at least two ribs 46, and described rib 46 is designed to similar to the rib 8 according to previous embodiment.Inner bolt 7 is identical with the inner bolt of previous embodiment.Therefore, the difference of first connecting portion in rod connector 310 and the previous embodiment is that the seat that is used for bar 1 is arranged on pressure elements 43.Described pressure elements is provided for exerting pressure on the head 21 of bone screw 20.
During use, bone screw is imported in first linkage section 40 of rod connector 310, import pressure elements 43 then.Bone screw 20, pressure elements 43 and rod connector 310 can be pre-assembled.When bone screw 20 was screwed into vertebra or bone, because the multiaxis between bone screw 20 and the rod connector 310 connects, rod connector 310 can be aimed at and be used to admit bar.
When inner bolt 7 was fastened, it can at first be pressed on first bar 1.Then, after first bar 1 deforms owing to its elasticity, the flange of inner bolt 7 contact pressure elements 43.Like this, bar just is locked on its position.After the further fastening inner bolt 7, it is pressed on the flange of pressure elements 43.Pressure elements 43 further is applied to this pressure on the head then, and head is pressed against again on the edge in hole 41.Like this, bone screw just is locked on the Qi Jiao position.
In another distortion, it is identical with first connecting portion that second connecting portion forms, so that can connect two bars of same type, and two for example mutually the same elastic rods.
The 5th embodiment of stabilising arrangement has been shown among Figure 15 to 17.Reference numeral identical in parts use identical with previous embodiment and the previous embodiment is represented.Described stabilising arrangement comprises rod connector 311, and the difference of the rod connector of this rod connector 311 and previous embodiment is to be provided with between the locking member 71 and first bar 1 pad (filling piece) 80.Adapter 311 according to the 5th embodiment comprises first adapter 410, and this first adapter 410 has opposing sidewalls 410a, 410b and is provided for the diapire 4c of the seat of bar 1, and has the projection 8 on described seat of embodiment as described above.The height that sidewall 410a and 410b have makes can put into pad 80 after insertion rod 1.On the inwall of sidewall 410a, 410b below female thread 6 gathering sill 411a, the 411b that engages with guide part 81a, 81b can be set, guide part 81a, 81b can be arranged on the opposite side of pad 80.Gathering sill and guide part also can save.Pad 80 comprises groove 82 in its side towards first bar 1, and the shape of groove 82 and the external shape of bar adapt.It is to cut cylinder shape groove 82 in the embodiment shown.On the surface of the contact lever of groove 82, can be provided with along the rib 83 that extends with the direction of bar 1 longitudinal axis perpendicular.Pad 80 can comprise opening 84 at its opposite side, and the circular projection of locking member 71 downsides is bonded in the opening 84 rotationally.Described opening also can save.Locking member 71 is similar to the locking member 7 of previous embodiment.The projection (not shown) that it can have coupling opening 84 is rotatably connected to provide.
Identical among second connecting portion 51 and second embodiment.Be provided with sidewall 410d between first connecting portion 410 and second connecting portion 51, this sidewall is used for their abutment surface when being formed on first bar and the insertion of second bar.
During use,, then be screwed into locking member inserting first bar, 1 back insertion pad.Described locking member can rotate with respect to pad.It is pressed on the pad, and pad is pressed in again on the surface of bar 1.
Figure 18 schematically shows the different application of stabilising arrangement with regard to spinal column 100 stable.Figure 18 a shows a kind of monotype (single type) rigid rod 2, titanium bar for example, and it can be connected with bone anchoring device 101 and be anchored in the vertebra of vertebra and be used to rigidly fix.Figure 18 b show be positioned at the band rigid rod 2 the stable structure end according to adapter 31 of the present invention, described adapter 31 is connected the latter end of rigid rod 2 with elastic rod 1.In this case because the power that rigidly fixes generation of stable motion section, the flowing of power can stretch out enter spinal column adjacent motor segment to protect its not over loading.
Figure 18 c shows the application with a kind of stabilisation systems of structure, and elastic rod 1 and rigid rod 2 are arranged in alternative mode in this structure.
Other modification can be arranged.For example, first linkage section and second linkage section can be located relative to each other, and bar seat separately is in identical or different height like this, to tackle different anatomy.In addition, linkage section can be oriented the angle that is different from zero degree relative to each other.Rod connector can be designed to first and second connecting portions and be arranged side by side, and promptly the sidewall with first connecting portion is relative.The individual components that first and second linkage sections can form each other forever or removably connect.The sidewall 4d, the 410d that separate first and second connecting portions can save.
The element of described different embodiment can make up, and for example each second connecting portion can make up with each first connecting portion.The portion that departs from that departs from the bar surface profile on the bar contact surface of present and/or locking member or pad of being provided with can have other shape except that the rib shape.Point-like or round point shape projection/cavity for example also can be set.

Claims (16)

1. stabilising arrangement that is used for stabilization of vertebral comprises:
First bar (1),
Second bar (2),
The rod connector (3 that connects first bar (1) and second bar (2); 31; 301; 310; 311), described rod connector comprises the receptacle (4 that is used to admit first bar (1); 40; 410) and be used for first bar is fixed on the retaining element (7) of receptacle,
Wherein in receptacle (4; 40; 410) be provided with bar contact surface (4c in; 47; 7a; 44), and the profile of its king-rod contact surface comprise the portion that departs from (8 of the surface profile that departs from first bar (1); 9; 46; 83).
2. stabilising arrangement as claimed in claim 1, wherein first bar (1) is made by elastomeric material, is preferably made by tartan.
3. stabilising arrangement as claimed in claim 1 or 2 is when the portion of departing from its king-rod contact surface is arranged on bar and inserts at least one side of bar.
4. as the described stabilising arrangement of one of claim 1 to 3, wherein second bar (2) is a rigid rod.
5. as the described stabilising arrangement of one of claim 1 to 4, the portion that departs from (8 of profile wherein; 9; 46; 83) be projection and/or depression on the bar contact surface.
6. as the described stabilising arrangement of one of claim 1 to 5, wherein first bar (1) has longitudinal axis (L 1), and depart from portion (8; 9; 46) on direction, extend basically transverse to the longitudinal axis of first bar.
7. as the described stabilising arrangement of one of claim 1 to 6, its king-rod contact surface is included in the (4c of seat portion of the seat that is formed for first bar (1) in the receptacle; 47) with the clamping section (7a) relative with seat portion, wherein the clamping section is arranged on the locking member (7).
8. as the described stabilising arrangement of one of claim 1 to 6, its king-rod contact surface comprises (a 4c of portion; 47) with the clamping section (82) relative with seat portion, and wherein the clamping section is arranged on the pad (80) between locking member (7) and the bar (1).
9. as the described stabilising arrangement of one of claim 1 to 8, wherein first bar (1) is by the exert pressure frictional force that produces and by the portion that departs from (8 of profile of locking member (7); 9; 46; 83) the indirect form mating reaction of Chan Shenging is fixed in the receptacle.
10. as the described stabilising arrangement of one of claim 1 to 9, wherein second bar (2) and rod connector (3; 31; 301; 310; 311) be individual components.
11. as the described stabilising arrangement of one of claim 1 to 10, wherein rod connector (3; 31; 301; 310; 311) comprise the opening (10 of the end that is used for admitting therein second bar (2); 11; 502) and be used for second bar is fixed on the fixture (2a of this opening; 13; 504).
12. stabilising arrangement as claimed in claim 11, its split shed (11) is a screwed hole, and the end (2a) of second bar (2) has the external screw thread with the threaded engagement of screwed hole.
13. stabilising arrangement as claimed in claim 11, its split shed (502) are the U-shaped grooves that has female thread, and fixture is the inner bolt of waiting to be screwed in the U-shaped groove (504).
14., wherein be used to admit the receptacle (4 of first bar (1) as the described stabilising arrangement of one of claim 1 to 13; 40) have the U-shaped groove, and retaining element (7) is the inner bolt of waiting to be screwed in the U-shaped groove.
15., wherein be used to admit the receptacle of first bar to be connected with bone anchoring device (20) as the described stabilising arrangement of one of claim 1 to 14.
16. a rod connector that is used to connect first bar (1) and second bar (2), described rod connector comprises:
Be used to admit the receptacle (4 of first bar (1); 40; 410) and be used for first bar is fixed on the retaining element (7) of receptacle,
Wherein in receptacle (4; 40; 410) be provided with bar contact surface (4c in; 47; 7a; 44), and the profile of its king-rod contact surface comprise the portion that departs from (8 of the surface profile that departs from first bar (1); 9; 46; 83), and its king-rod (1) by the exert pressure frictional force that produces and of locking member (7) by the portion that departs from (8 of profile; 9; 46; 83) the indirect form mating reaction of Chan Shenging and be maintained at appropriate location in first connecting portion.
CN2008100096456A 2007-02-23 2008-02-19 Device for stabilizing vertebrae and rod connector used therefor Expired - Fee Related CN101249017B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US90313407P 2007-02-23 2007-02-23
EP07003788A EP1961392B1 (en) 2007-02-23 2007-02-23 Device for stabilizing vertebrae
EP07003788.2 2007-02-23
US60/903,134 2007-02-23

Publications (2)

Publication Number Publication Date
CN101249017A true CN101249017A (en) 2008-08-27
CN101249017B CN101249017B (en) 2012-12-26

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US (2) US8419773B2 (en)
EP (2) EP2301456B1 (en)
JP (1) JP5227045B2 (en)
KR (1) KR101413732B1 (en)
CN (1) CN101249017B (en)
ES (2) ES2392351T3 (en)
TW (1) TWI422362B (en)

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CN102368967A (en) * 2009-04-15 2012-03-07 斯恩蒂斯有限公司 Revision connector for spinal constructs
US9848918B2 (en) 2005-11-21 2017-12-26 DePuy Synthes Products, Inc. Polyaxial bone anchors with increased angulation
US10709479B2 (en) 2008-09-29 2020-07-14 DePuy Synthes Products, Inc. Polyaxial bottom-loading screw and rod assembly
US10898234B2 (en) 2007-07-20 2021-01-26 DePuy Synthes Products, Inc. Polyaxial bone fixation element
CN113440236A (en) * 2021-06-22 2021-09-28 浙江德康医疗器械有限公司 Domino connection system
US11129648B2 (en) 2008-09-12 2021-09-28 DePuy Synthes Products, Inc. Spinal stabilizing and guiding fixation system
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US20130184755A1 (en) 2013-07-18
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